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I have a robot to conduct welding on small parts on a turntable. When in teach mode the robot speed is reduced below 250 mm/sec. The turntable is also controlled by the teach pendant in teach mode and both cannot be moved simultaneously, either one or the other. Is there a set "speed limit" for the turntable (or other ancillary equipment similar to this) that must be met when in teach mode (e.g. 250mm/sec) or is it whatever is determined as acceptable risk by the risk assessment?

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Larry Barley - Welding Engineer
lbarley [at] daihen-usa [dot] com
(937) 667-0800

Clinton, 250 mm/sec is max by RIA. The integrator may set a lower limit based on the risk assessment. Eg.: If the turntable is set up for a larger part (36" - 72") the 250 mm/sec is at the max diameter. If this is the set point and you are trying to weld a 2" pipe in teach mode, you will not hit the travel speed you may need. Some robots / turntables are tied together and can be run together in teach mode, some are not you may need to talk to you robot supplier or integrator on this. It could be you are not getting to the proper set point in your teach pendant to operate both at the same time.

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